I've thought about trying to set up a table with things to sell at the Raleigh flea market (about 120 miles from my home).
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Go to the flea market and check out what they have and what is selling. One of my Texas daughters said that she and her handicapped DH made as much on weekends as she did at a full time job.
Said that lots of silly things sold, such as wooden ducks you stick in the ground, plywood cutouts of the rear of a fat woman bending over ( all nicely painted), with wooden stuff like that was easy for a handicapped man to make with simple power tools. She also sold lots of strange beadwork she made, and dressed Indian dolls (American Indian).
But you must find out what is selling in your area. Should you have a near by Civil War re-inactment then sun bonnets for adults and children might sell nicely, along with matching aprons.